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Old 11-06-2011, 09:44 AM   #1
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Lightbulb Getting the Pentastar to put out 300 HP?

Everyone knows 299 horsepower doesn't sound anywhere NEAR as great as 300. What would be some basic modifications one could do to a 3.6 to get it to tip the 300 mark? Would a simple Superchips tune do the fix?

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Old 11-06-2011, 09:57 AM   #2
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Cold air intake, throttle body spacer, cat back exhaust, headers. Shot of nitrous..........there are many bolt on options but im not sure whats available yet for the 2012

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Old 11-06-2011, 09:59 AM   #3
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I don't believe Superchips works for the '11 or '12...I could be mistaken.
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Old 11-06-2011, 10:09 AM   #4
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Quote:
Originally Posted by Thracks
Everyone knows 299 horsepower doesn't sound anywhere NEAR as great as 300. What would be some basic modifications one could do to a 3.6 to get it to tip the 300 mark? Would a simple Superchips tune do the fix?
The pentastar makes 285 horsepower, not 299, so adding 15 more horsepower might need a little more than just a tune but CAI cat back exhaust and throttle body spacers might do it. Or you could always just supercharge it and get 300 horsepower in the only place that matters-the wheels
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Old 11-06-2011, 10:15 AM   #5
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Chrysler is slowly rolling out tamper proof ECUs. The new SRT8 Challengers cannot be modified via a Diablo tuner any more. People are retrofitting older ECU's to the cars to be able to tune them. They have attempted to do the same with the Cummins in the HD trucks but the market for aftermarket tuners there is bigger so a few shops have thrown some serious dollars at cracking the code. Chrysler can also tell directly by hooking up the ECU of the trucks if a tune has been loaded. They leave a footprint even if the original tune has been reloaded. Chrysler will void the warranty on all applicable parts immediately. They have been know to void warranties on the Cummins for a CAI. Be wary of modifying the ECU of engine. Having said that I have modified the heck out of 2011 HD Cummins and the warranty is long gone. But I feel the mods outweighed the warranty. FWIW.
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Old 11-06-2011, 10:16 AM   #6
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Quote:
Originally Posted by Overtrained
Cold air intake, throttle body spacer, cat back exhaust, headers. Shot of nitrous..........there are many bolt on options but im not sure whats available yet for the 2012
Headers would be kind of difficult on a pentastar....
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Old 11-06-2011, 10:36 AM   #7
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Quote:
Originally Posted by 2012-Rubicon

Headers would be kind of difficult on a pentastar....
Lol


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Old 11-06-2011, 10:47 AM   #8
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is there a throttle body spacer for it yet? I do not believe there are any after market intakes for it yet but one can always be made. Possibly a more free flowing axle back?
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Old 11-06-2011, 10:54 AM   #9
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Lol

I'm gathering you know why I said that lol....
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Old 11-06-2011, 10:56 AM   #10
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Quote:
Originally Posted by 2012-Rubicon

I'm gathering you know why I said that lol....
Ya, the popcorn was for the thread itself
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Old 11-06-2011, 11:02 AM   #11
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... Cause throttle body spacers work....
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Old 11-06-2011, 11:11 AM   #12
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Quote:
Originally Posted by hombredelassrtas
is there a throttle body spacer for it yet? I do not believe there are any after market intakes for it yet but one can always be made. Possibly a more free flowing axle back?
They don't work in non-carbed engines anyway, so it makes no difference.
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Old 11-06-2011, 11:13 AM   #13
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Quote:
Originally Posted by hombredelassrtas View Post
is there a throttle body spacer for it yet? I do not believe there are any after market intakes for it yet but one can always be made. Possibly a more free flowing axle back?
Yes there is. The 3.6 engine is the same as whats in the grand cherokees, challengers etc. The spacer is engine specific not vehicle specific. I think Airaid makes one for this engine.
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Old 11-06-2011, 11:19 AM   #14
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Wouldn't touch the intake, it's perfect. If you want to gain some "power," albeit negligible other than more noise and dust being introduced to the intake track (source), then throw a K&N drop-in filter in the stock air box. There was an OEM exhaust guy on one of the boards that states that messing with the "hot side" of the (from exhaust port to cat. outlet) will decrease power unless the ECM is retuned. But, the more free flowing you can make the "cold side" of the exhaust (a cat-back system) decreasing back-pressure as much as possible, the more power increase you will see. Now, is that a 3 HP increase? A 5-10 HP increase? Who knows, but that's as much as you can do performance-wise -- I'm just going to throw an MBRP cat-back on whenever it comes out for the 2012 and call it a day. I'm happy with the stock power output as it is.
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Old 11-06-2011, 11:42 AM   #15
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^ yup. I bought a jeep, not a corvette
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Old 11-06-2011, 03:21 PM   #16
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Quote:
Originally Posted by Overtrained View Post
Cold air intake, throttle body spacer, cat back exhaust, headers. Shot of nitrous..........there are many bolt on options but im not sure whats available yet for the 2012
Don't forget a "Type R" sticker. It will help as much as that stuff.
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Old 11-06-2011, 03:24 PM   #17
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Quote:
Originally Posted by Overtrained View Post
Yes there is. The 3.6 engine is the same as whats in the grand cherokees, challengers etc. The spacer is engine specific not vehicle specific. I think Airaid makes one for this engine.
it still doesnt matter cause you will see no gains from a throttle body spacer on a modern engine.
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Old 11-06-2011, 05:05 PM   #18
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Quote:
Originally Posted by oilwell1415

Don't forget a "Type R" sticker. It will help as much as that stuff.
Really eBay have any R stickers?

I'll remove the R in rubicon so it will say

Type R ubicon

Then it will go faster
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Old 11-06-2011, 05:11 PM   #19
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Quote:
Originally Posted by kjeeper10

Really eBay have any R stickers?

I'll remove the R in rubicon so it will say

Type R ubicon

Then it will go faster
Type r stickers are worth at least 10hp a piece
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Old 11-06-2011, 05:12 PM   #20
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Quote:
Originally Posted by 2012-Rubicon

Type r stickers are worth at least 10hp a piece
20 hp's

Sa-weet
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Old 11-06-2011, 05:14 PM   #21
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Bore it out, add a engine management system and a new exhaust & air intake

you should have over 300 by the time your done

new rods pistons bolts you should be good
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Old 11-07-2011, 06:33 AM   #22
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Don't forget a "Type R" sticker. It will help as much as that stuff.
Flame stickers and a hood scoop also work wonders. I wonder if there's a way to put a wing on the back of a Wrangler? All that extra HP means you'll need a way to create a down-force on the rear wheels.
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Old 11-07-2011, 06:38 AM   #23
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I'm glad someone else mentioned that the throttle body spacers are useless. I"m tired of people believe they add horsepower, those only worked on TBI and Carb'd engines. Otherwise you're only moving the butterfly further away which does nothing for power.
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Old 11-07-2011, 06:52 AM   #24
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Originally Posted by deathphoenix99
I'm glad someone else mentioned that the throttle body spacers are useless. I"m tired of people believe they add horsepower, those only worked on TBI and Carb'd engines. Otherwise you're only moving the butterfly further away which does nothing for power.
Did they even make a difference on them??
BTW the pentastar in other Chrysler vehicles makes more HP
The 3.6 in the challenger uses a different intake designed for HP
The jeep intake is designed for a broad power range
The new Ram will have yet another intake
And yield more HP
Chrysler is actually designing a twin turbo
System for the 3.6 and still using the same base engine as the rest
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Old 11-07-2011, 06:54 AM   #25
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The pentastar makes 285 horsepower, not 299
I never said it did.
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Old 11-07-2011, 06:57 AM   #26
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Stickers... psshhh...

You guys are missing the biggest performance booster out there... Chrome.. I think it's like 300hp per pound.
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Old 11-07-2011, 07:00 AM   #27
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Did they even make a difference on them??
Not much, but they helped the fuel and air to mix better. But it wasn't a big increase or anything. I just can't believe they make them for new engines and people will pay $50 or more for them....
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Old 11-07-2011, 07:08 AM   #28
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Carb spacers work great for low end torque. Used them on my drag car back in the day. Makes sense it doesn't work on a fuel injected motor, only moving air through the throttle body, not fuel.

However the dyno dosent lie. Has anyone tried any bolt ons and dynoed the jeep to see an actual increase in hp/tq?
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Old 11-07-2011, 09:03 AM   #29
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Throttle body spacers do often work on fuel injected engines, I just don't think they will work on a more modern engine that the factory has spent a lot of time on to optimize. The reason they work is that they increase plenum volume which has proven time and time again to help power in situations where the intake manifold isn't able to store enough mixture to feed two or more cylinders that are trying to consume air at the same time.

I don't find them very useful on the most modern engines because these are usually very well optimized from the factory. If there was 5hp there to be had from increasing the plenum volume they would have done it at the factory because there is no harm done to mileage or emissions by doing so. It would be silly for them to leave that on the table after all the development work that had been done.
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Old 11-07-2011, 09:43 AM   #30
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Dyno numbers before and after said TB spacer or this argument is moot.

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